Green polymer blends compatibilized with biomass derived-agents

• Main Authors: Eksiler, Kubra, Ando, Yoshito, 安藤, 義人, アンドウ, ヨシト, Shirai, Yoshihito, 白井, 義人, シライ, ヨシヒト
• Format: Other/Unknown Material
• Language: English
• Published: Academia Publishing 2017
• Subjects: Polymer blend; poly(lactic acid); cis-1,4-polyisoprene; soybean lecithin; acrylated-epoxidized soybean oil; Pi Islands
• Online Access: https://kyutech.repo.nii.ac.jp/record/5377/files/AJES5_193.pdf

The effect of soybean lecithin (SOLE) and acrylated epoxidized soybean oil (AESO) as biomass-based compatibilizer agents was studied for the purpose of enhancing the compatibility of environmentally friendly thermoplastic/elastomeric blend of poly (lactic acid) (PLA) and synthetic rubber (PI). PI was melt mixed 25:75 into PLA with and without compatibilizer agents by a twin-screw extruder. The content of compatibilizer agents was kept at 0.5 and 2%, rrespectively. The compatibility of SOLE and AESO was investigated with thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and tensile test. From the thermal degradation and morphologic analysis, it was observed that SOLE was more effective in improving compatibility of PLA/PI blend in comparison with AESO. The inclusion of 0.5% SOLE into the blend system led to increment in the thermal stability, approximately, 10°C. Furthermore, a reduction of the size of PI islands distributed homogenously in the PLA matrix with the help of SOLE was observed, indicating the enhancement of interfacial adhesion. In other words, partially compatibilization took place resulting in the minimization of the dispersed PI island size. Journal Article journal article